Boat oar



March 18, 1952 s JACKSON 2,589,698

BOAT OAR Filed Nov. 22, 1948 In ventor Jam Solomon N. Jackson W mmPatented Mar. 18, 1952 UNITED STATES PATENT OFFICE BOAT OAR Solomon N.Jackson, Georgetown, Tex.

Application November 22, 1948, Serial No. 61,477

1 Claim. 1

This invention relates to new and useful improvements in boat oars andhas for its primary object to enable a row boat operator to moreconveniently and efiiciently propel and maneuver the boat.

Another important object of this invention is to provide an oarincluding a shank, having a handle formed at one end thereof and aplurality of cooperating longitudinally extending radially spaced bladescarried by the other end, the blades being of equal length and width andadapted to pocket the water, so that the boat may be propelled at agreater rate of speed, with less strain and effort on the part of therower.

Another important object of this invention is to provide means forcounterbalancing the weight of the cross blades carried by one end ofthe oar shank or shaft, the means preferably including a buoyant chamberinterposed between the blades and the shank.

These and ancillary objects and structural features of merit areattained by this invention, a preferred embodiment of which is set forthin the following description and illustrated in the accompanyingdrawings, wherein:

Figure 1 is a view in perspective of an oar, constructed in accordancewith the principles of this invention;

Figure 2 is a transverse sectional view of the blades, taken on line 22,of Figure l; and

Figure 3 is a longitudinal sectional view taken on line 3-3, of Figure2.

Referring now more particularly to the drawings, this invention,generally designated by the character reference [9 includes an elongatedshank or shaft l2, having a hand grip section or handle section l4formed at one end thereof. A conical extension I6 is secured at itsminor end to the opposite end of the shank, with a disk-like plate 18secured to the major end of the extension, forming an air tight buoyantchamber 20. A plurality of cooperating longitudinally extending radiallyspaced blades 22 are carried by the outer surface of the plate 13 andare adapted for selective insertion into the surface of the water. Theblades include a blade 24 transversely disposed at one end on the platel8 and a pair of complementary aligned blades 26 and 23 which centrallyintersect and are secured to the blade 24.

In use, the shank l2 would be held in a conventional oar lock secured tothe boat, the conical extension [6 functioning as counterbalancing meansfor counterbalancing the weight of the blades, when the oar is in use,the blades being inserted within the Water, and used in a conventionalmanner.

It is to be apparent that the blades would pocket the water, anytendency of rotation being prevented by the grip of the user on thehandle M. The V-shaped formation of the blade 24, with the blades 28 and26 will enable the blades to pocket the water therebetween and the crossplacement of the blades will enable the blades to be at all timespositioned in the water in a manner to pocket the Water therebetween.

The conical extension would rest on the upper surface of the water oradjacent thereto and would offset the added weight of the blades on theend of the shaft or shank.

Thus, it can be seen that there has been provided a novel and usefuloar, which will render more convenient the task of rowing a boat andwill enable the same to be carried out more efficiently, regardless ofthe experience of the rower. However, since many other purposes andembodiments of this invention will become apparent to those skilled inthe art, it is to be understood that certain changes may be carried out,

" as coming within the spirit and scope of the appended claim.

Having described the invention, what is claimed as new is:

An oar comprising an elongated shaft, having at one end a grip, and anelongated propelling device secured to the other end of said shaft, saidpropelling device comprising a hollow frustoconical member having itsminor end secured to the shaft, a plate closing the major end of thefrusto-conical member forming a chamber, said chamber forming a buoyantsupport for the oar, a plurality of blades extending from said plate,said blades intersecting each other along the axis of the shaft.

SOLOMON N. JACKSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,066,662 Schmidt, Jr. July 8,1913 1,349,391 Kuznetzoff Aug. 17, 1920 1,807,386 Butler May 26, 1931FOREIGN PATENTS Number Country Date 7,786 Great Britain 1888 718,523France Jan. 26, 1932

